diff options
| -rw-r--r-- | src/OfdmGenerator.cpp | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/OfdmGenerator.cpp b/src/OfdmGenerator.cpp index 23cece0..d6698c2 100644 --- a/src/OfdmGenerator.cpp +++ b/src/OfdmGenerator.cpp @@ -599,6 +599,27 @@ OfdmGeneratorDEXTER::OfdmGeneratorDEXTER(size_t nbSymbols, etiLog.level(info) << "Using DEXTER FFT Accelerator for fixed-point transform"; + // I tried to get this to work in code using libgpiod, but life is too short to waste time on that. + // It works through gpioset, so we just call it + // The GPIO is connected to the config AXI bus of the xfft block. + // 15..0 is the config data; 31 is tvalid + if (inverse) { + if (system("gpioset gpiochip0 0=0 31=0") != 0) + throw std::runtime_error("Failed to call gpioset #1"); + if (system("gpioset gpiochip0 0=0 31=1") != 0) + throw std::runtime_error("Failed to call gpioset #2"); + if (system("gpioset gpiochip0 0=0 31=0") != 0) + throw std::runtime_error("Failed to call gpioset #3"); + } + else { + if (system("gpioset gpiochip0 0=1 31=0") != 0) + throw std::runtime_error("Failed to call gpioset #1"); + if (system("gpioset gpiochip0 0=1 31=1") != 0) + throw std::runtime_error("Failed to call gpioset #2"); + if (system("gpioset gpiochip0 0=1 31=0") != 0) + throw std::runtime_error("Failed to call gpioset #3"); + } + if (nbCarriers > spacing) { throw std::runtime_error("OfdmGenerator nbCarriers > spacing!"); } |